82594409 has 2 divisors, whose sum is σ = 82594410. Its totient is φ = 82594408.

The previous prime is 82594373. The next prime is 82594411. The reversal of 82594409 is 90449528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73273600 + 9320809 = 8560^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 82594409 - 2⁸ = 82594153 is a prime.

It is a Sophie Germain prime.

Together with 82594411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (82594429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41297204 + 41297205.

It is an arithmetic number, because the mean of its divisors is an integer number (41297205).

Almost surely, 2^82594409 is an apocalyptic number.

It is an amenable number.

82594409 is a deficient number, since it is larger than the sum of its proper divisors (1).

82594409 is an equidigital number, since it uses as much as digits as its factorization.

82594409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 82594409 is about 9088.1466207363. The cubic root of 82594409 is about 435.4953778701.

The spelling of 82594409 in words is "eighty-two million, five hundred ninety-four thousand, four hundred nine".